Differential D8794 Diff 28645 source/blender/gpu/opengl/gl_vertex_buffer.hh

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source/blender/gpu/opengl/gl_vertex_buffer.hh

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				/*
				* This program is free software; you can redistribute it and/or
				* modify it under the terms of the GNU General Public License
				* as published by the Free Software Foundation; either version 2
				* of the License, or (at your option) any later version.
				*
				* This program is distributed in the hope that it will be useful,
				* but WITHOUT ANY WARRANTY; without even the implied warranty of
				* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
				* GNU General Public License for more details.
				*
				* You should have received a copy of the GNU General Public License
				* along with this program; if not, write to the Free Software Foundation,
				* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
				*
				* The Original Code is Copyright (C) 2020 Blender Foundation.
				* All rights reserved.
				*/

				/** \file
				* \ingroup gpu
				*/

				#pragma once

				#include "MEM_guardedalloc.h"

				#include "glew-mx.h"

				#include "gpu_vertex_buffer_private.hh"

				namespace blender {
				namespace gpu {

				class GLVertBuf : public VertBuf {
				friend class GLTexture; /* For buffer texture. */
				friend class GLShader; /* For transform feedback. */

				private:
				/** OpenGL buffer handle. Init on first upload. Immutable after that. */
				GLuint vbo_id_ = 0;
				/** Size on the GPU. */
				size_t vbo_size_ = 0;

				public:
				void bind(void);

				protected:
				void acquire_data(void) override;
				void resize_data(void) override;
				void release_data(void) override;
				void upload_data(void) override;
				void duplicate_data(VertBuf *dst) override;

				MEM_CXX_CLASS_ALLOC_FUNCS("GLVertBuf");
				};

				static inline GLenum to_gl(GPUUsageType type)
				{
				switch (type) {
				case GPU_USAGE_STREAM:
				return GL_STREAM_DRAW;
				case GPU_USAGE_DYNAMIC:
				return GL_DYNAMIC_DRAW;
				case GPU_USAGE_STATIC:
				return GL_STATIC_DRAW;
				default:
				BLI_assert(0);
				return GL_STATIC_DRAW;
				}
				}

				static inline GLenum to_gl(GPUVertCompType type)
				{
				switch (type) {
				case GPU_COMP_I8:
				return GL_BYTE;
				case GPU_COMP_U8:
				return GL_UNSIGNED_BYTE;
				case GPU_COMP_I16:
				return GL_SHORT;
				case GPU_COMP_U16:
				return GL_UNSIGNED_SHORT;
				case GPU_COMP_I32:
				return GL_INT;
				case GPU_COMP_U32:
				return GL_UNSIGNED_INT;
				case GPU_COMP_F32:
				return GL_FLOAT;
				case GPU_COMP_I10:
				return GL_INT_2_10_10_10_REV;
				default:
				BLI_assert(0);
				return GL_FLOAT;
				}
				}

				} // namespace gpu
				} // namespace blender